BIC America F12 Subwoofer Board Issue and Possible Solutions

GauravK

New Member
Joined
Jun 4, 2024
Messages
4
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3
Location
Pune, India
Dear Community Members,

I've been a regular visitor to the HiFiVision for about a year now, seeking advice on AV-related matters. I would like to thank everyone who has shared their insights on this platform which helped me in my decision making process. This is my first time owning a HiFi audio system and participating in this forum, so please bear with me if my knowledge is limited.

Last year, I purchased a Denon AVR-X1700H along with a pair of Q Acoustic 3030i speakers (purchased from shop) and a BIC America F12 subwoofer (purchased from Amazon.in). However, after two months of use, the F12 unexpectedly stopped working one evening due to a blown fuse and couldn't power up. The amp board got replaced under warranty. Everything seemed fine until last week when the same issue occurred again during operation. Once again, the subwoofer has been sent for warranty claim, and I'm currently awaiting its return.

After researching various threads, I've noticed similar complaints from other users about this recurring problem. I'm thinking whether to sell the subwoofer or explore alternative solutions to prevent such mishaps. Following the first incident, I purchased V-Guard Digi 200 voltage stabilizer to safeguard against power surges/fluctuations. While I haven't observed significant fluctuations in my area, there are frequent momentary outages where the electricity goes off and back on within a second. Interestingly, the second time the F12 amp blew, a similar power outage occurred. It's worth noting that the AVR and all other appliances, such as the TV and gaming console, remain unaffected; the issue seems isolated to the F12 subwoofer.

I would appreciate your suggestions on how to proceed. I'm considering investing in an online UPS, although noise could potentially be a concern given that my setup is in the living room. Alternatively, I'm thinking about selling the F12 and upgrading to a DC power supply subwoofer like the SVS PB-1000.

Thank you for your insights.

Best regards,
Gaurav
 
Dear Community Members,

I've been a regular visitor to the HiFiVision for about a year now, seeking advice on AV-related matters. I would like to thank everyone who has shared their insights on this platform which helped me in my decision making process. This is my first time owning a HiFi audio system and participating in this forum, so please bear with me if my knowledge is limited.

Last year, I purchased a Denon AVR-X1700H along with a pair of Q Acoustic 3030i speakers (purchased from shop) and a BIC America F12 subwoofer (purchased from Amazon.in). However, after two months of use, the F12 unexpectedly stopped working one evening due to a blown fuse and couldn't power up. The amp board got replaced under warranty. Everything seemed fine until last week when the same issue occurred again during operation. Once again, the subwoofer has been sent for warranty claim, and I'm currently awaiting its return.

After researching various threads, I've noticed similar complaints from other users about this recurring problem. I'm thinking whether to sell the subwoofer or explore alternative solutions to prevent such mishaps. Following the first incident, I purchased V-Guard Digi 200 voltage stabilizer to safeguard against power surges/fluctuations. While I haven't observed significant fluctuations in my area, there are frequent momentary outages where the electricity goes off and back on within a second. Interestingly, the second time the F12 amp blew, a similar power outage occurred. It's worth noting that the AVR and all other appliances, such as the TV and gaming console, remain unaffected; the issue seems isolated to the F12 subwoofer.

I would appreciate your suggestions on how to proceed. I'm considering investing in an online UPS, although noise could potentially be a concern given that my setup is in the living room. Alternatively, I'm thinking about selling the F12 and upgrading to a DC power supply subwoofer like the SVS PB-1000.

Thank you for your insights.

Best regards,
Gaurav
Hi Gaurav,

Sorry to hear about the multiple failures. By any chance, is the sub plugged into a dedicated socket which is only supplying the subwoofer and not the TV. And during these fuse blows, did the RCCB at the mains box trip by any chance. And did you by any chance check to see if the fuse is slow or fast blow type.
 
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Hello @Yelamanchili manohar,

Thanks for taking out time answering the query :)

Stabilizer has 2 out ports and is connected directly to 16A wall socket. Stabilizer's one port is dedicated to sub and other one to AVR and Gaming console. Neither MCB nor RCCB was tripped during sub failure. Sub. came with ceramic slow blow fuse but at first replacement, they plugged glass fast blow type. When I tried to change the fuse last week after failure, fuse continued to blow but my MCB tripped during that time.
 
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Dear Community Members,

I've been a regular visitor to the HiFiVision for about a year now, seeking advice on AV-related matters. I would like to thank everyone who has shared their insights on this platform which helped me in my decision making process. This is my first time owning a HiFi audio system and participating in this forum, so please bear with me if my knowledge is limited.

Last year, I purchased a Denon AVR-X1700H along with a pair of Q Acoustic 3030i speakers (purchased from shop) and a BIC America F12 subwoofer (purchased from Amazon.in). However, after two months of use, the F12 unexpectedly stopped working one evening due to a blown fuse and couldn't power up. The amp board got replaced under warranty. Everything seemed fine until last week when the same issue occurred again during operation. Once again, the subwoofer has been sent for warranty claim, and I'm currently awaiting its return.

After researching various threads, I've noticed similar complaints from other users about this recurring problem. I'm thinking whether to sell the subwoofer or explore alternative solutions to prevent such mishaps. Following the first incident, I purchased V-Guard Digi 200 voltage stabilizer to safeguard against power surges/fluctuations. While I haven't observed significant fluctuations in my area, there are frequent momentary outages where the electricity goes off and back on within a second. Interestingly, the second time the F12 amp blew, a similar power outage occurred. It's worth noting that the AVR and all other appliances, such as the TV and gaming console, remain unaffected; the issue seems isolated to the F12 subwoofer.

I would appreciate your suggestions on how to proceed. I'm considering investing in an online UPS, although noise could potentially be a concern given that my setup is in the living room. Alternatively, I'm thinking about selling the F12 and upgrading to a DC power supply subwoofer like the SVS PB-1000.

Thank you for your insights.

Best regards,
Gaurav
When the 2nd time the subwoofer blew, was it on the stabilizer? I'm also from Pune. It is notorious for voltages above 240v which is as per the new attrocious electricity standards set for this country. Earlier it was 230 +- 5%. Now it is 240 += 10 %. So as per the new standards it is perfectly OK if you get 264 volts. 264 volts will fry most equipments imported in the country before 2022 or so. New equipments have to undergo certification to withstand 240 +- 10 %.

I have installed stabilzers everywhere. Before the stabilizers I have lost few equpments from the post covid era when the new voltage standars were implemented. Many in your complex have lost tv sets. I have come across few reports of AVRs going bad in Mumbai. So anything precious, don't run it without a stabilizer.

Also many subwoofers the warranty becomes void if you use a UPS. Their power supplies need a perfect 50 or 60Hz perfect sine wave and not the semi-perfect sine wave from UPS. Even the building generator gives a perfect sine wave output.
 
When the 2nd time the subwoofer blew, was it on the stabilizer? I'm also from Pune. It is notorious for voltages above 240v which is as per the new attrocious electricity standards set for this country. Earlier it was 230 +- 5%. Now it is 240 += 10 %. So as per the new standards it is perfectly OK if you get 264 volts. 264 volts will fry most equipments imported in the country before 2022 or so. New equipments have to undergo certification to withstand 240 +- 10 %.

I have installed stabilzers everywhere. Before the stabilizers I have lost few equpments from the post covid era when the new voltage standars were implemented. Many in your complex have lost tv sets. I have come across few reports of AVRs going bad in Mumbai. So anything precious, don't run it without a stabilizer.

Also many subwoofers the warranty becomes void if you use a UPS. Their power supplies need a perfect 50 or 60Hz perfect sine wave and not the semi-perfect sine wave from UPS. Even the building generator gives a perfect sine wave output.
Yes, right after the first incident, I installed stabilizer so I'm also wondering how this happened second time. There is a 3 second time delay in stabilizer so eventually it should protect from potential sudden power surge I believe.

Unfortunately, warranty replace is rejected this time so I'm now paying it from my pocket to get it repaired (Work in process). I'm actually a bit hesitating now to plug it back knowing there might be a high possiblity that it should brick again : (

Will Online UPS going to help prevent this problem in future? What do you guys suggest.. Any pointers are appreciated.
 
Yes, right after the first incident, I installed stabilizer so I'm also wondering how this happened second time. There is a 3 second time delay in stabilizer so eventually it should protect from potential sudden power surge I believe.

Unfortunately, warranty replace is rejected this time so I'm now paying it from my pocket to get it repaired (Work in process). I'm actually a bit hesitating now to plug it back knowing there might be a high possiblity that it should brick again : (

Will Online UPS going to help prevent this problem in future? What do you guys suggest.. Any pointers are appreciated.
Unfortunate that it went bad even after putting a stabilizer. Could be an issue with the unit. Why did they reject the warranty claim this time?

Many subwoofer void warranty if running on UPS (my subwoofer has a warning to not use any UPS). So I can use just a stabilizer and I also use a high voltage cut out which shuts of electricity if it goes above 240 volts.
 
Yes, right after the first incident, I installed stabilizer so I'm also wondering how this happened second time. There is a 3 second time delay in stabilizer so eventually it should protect from potential sudden power surge I believe.

Unfortunately, warranty replace is rejected this time so I'm now paying it from my pocket to get it repaired (Work in process). I'm actually a bit hesitating now to plug it back knowing there might be a high possiblity that it should brick again : (

Will Online UPS going to help prevent this problem in future? What do you guys suggest.. Any pointers are appreciated.
Online stabikizer cinsidered to be bedt protection. Leave about warranty issues. If online ups is there you will get protection and nay be no need to vusit service center .
At my place dailh morning 7.30 i observe reading shows 254 v. Getting scared even through had servo. Go with online ups.
 
Unfortunate that it went bad even after putting a stabilizer. Could be an issue with the unit. Why did they reject the warranty claim this time?

Many subwoofer void warranty if running on UPS (my subwoofer has a warning to not use any UPS). So I can use just a stabilizer and I also use a high voltage cut out which shuts of electricity if it goes above 240 volts.
BIC America service work in Pune is delegated to National Electronics, Somwar Peth (They were also not aware about this and come to know when I submitted my first warranty claim in December 2023 so dont know how this works). I come to know from them about warranty claim is not getting approved, no specific justification I received. Since the product has warranty of only 1 year in India, second claim I submitted was just 12 days before warranty end and I got this messege after the end date. So I thought I should just get it repaired as its not worth my time fighting BIC on this subject. Despite BIC America's wonderful products, I experianced poor after sales support in India so its a big "NO" for me in future purchases.
 
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